About original Project readme.md

https://github.com/jrenc2002/GenLineAnimation-Server/blob/master/README.md

For this forked project, i'm adding a new feature to allow the user to add background image to the animation.

Useage:

https://localhost:3000/signature?name=John&background=https://example.com/bg.png

You may adjust the size of background image via "width" and "height" ,

https://localhost:3000/signature?name=John&background=https://example.com/bg.png&width=500&height=200

Example:

http://localhost:3000/signature?
name=Hello%20%20World!
&background=https://upload.wikimedia.org/wikipedia/commons/thumb/2/2d/Castillo_de_Hohenwerfen%2C_Werfen%2C_Austria%2C_2019-05-17%2C_DD_143-149_PAN.jpg/1362px-Castillo_de_Hohenwerfen%2C_Werfen%2C_Austria%2C_2019-05-17%2C_DD_143-149_PAN.jpg
&animate=true
&speed=2
&color=%23FF0000

Add docker support

# build docker image
docker build -t genlineanimation .
# run container
docker run -d -p 3000:3000 genlineanimation

if you want to use the docker image, you can use the following command to run the container (Linux/arm64)

docker run -d -p 3000:3000 azurewhisper/genlineanimation:latest